Overview

Introduction

This solar power management module is designed for 6V~24V solar panels. It can charge the 3.7V rechargeable Li battery through a solar panel or Type-C connector and provides 5V/3A regulated output (supports multiple protocols such as PD/QC/FCP/PE/SFCP). The module features MPPT (Maximum Power Point Tracking) function and multi-protection circuits, therefore, it can keep working with high efficiency, stability, and safety. It is suited for solar-powered, low-power IoT, and other environmental protection projects.

Features

Supports MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel.
Supports solar panel/ Type-C power adapter for battery charging.
For 6V~24V solar panel, supports self-adaptive input voltage via DC-002 jack or screw terminal.
Multi LED indicators, for monitoring the status of solar panels and batteries.
Multi-protection circuits: overcharge / over-discharge / reverse protection/ overheat/ over current, stable and safe to use.

Parameters

PRODUCT	SOLAR POWER MANAGER	SOLAR POWER MANAGER (B)	SOLAR POWER MANAGER (C)	SOLAR POWER MANAGER (D)
(SOLAR IN)	6V ~ 24V (6V by default)	6V ~ 24V (18V by default)		6V ~ 24V
RECHARGING	Solar panel, power adapter, USB
BATTERY	3.7V 850mAh 14500 Li-ion battery (NOT included)	3.7V 10000mAh Li-po battery	3x 18650 Li-ion battery 7800mAh (NOT included)	3.7V Li-ion battery (NOT included)
USB INPUT	5V (Micro USB)	5V (TYPE-C, with PD quick charge support)
5V OUTPUT	5V / 1A (USB OUT, pin header) 3.3V / 1A (pin header)	5V / 3A (USB-OUT, TYPE-C)		5V / 3A (Screw terminal, TYPE-C)
RECHARGING CUTOFF VOLTAGE	4.2V ± 1％
OVER DISCHARGING PROTECTION VOLTAGE	2.9V ± 1％	3.0V ± 1％
SOLAR PANEL RECHARGING EFFICIENCY	~ 78%
USB RECHARGING EFFICIENCY	~ 82%	~ 93%
BATTERIES BOOST OUTPUT EFFICIENCY	~ 86%	~ 90%
QUIESCENT CURRENT (MAX)	<2mA	<80mA		<30mA
CASE	N/A	Metal case		N/A
OPERATING TEMPERATURE	-40℃ ~ 85℃
DIMENSIONS (mm)	65.2 × 56.2 × 22.9	108.0 × 71.0 × 25.2	119.0 × 71.0 × 25.2	45.0 x 40.0 x 16.1

Onboard Interface

Power Indicator Description

Power Indicator	LED1	LED2	LED3	LED4
75~100%	ON	ON	ON	ON
50~75%	ON	ON	ON	OFF
25~50%	ON	ON	OFF	OFF
5~25%	ON	OFF	OFF	OFF
0%	OFF	OFF	OFF	OFF

Usage Guide

The correct usage method: Correctly connect the batteries, pay attention to the pole orientation, and the battery capacity indicators show the remaining power.
Solar panel recharging status LED: Connect the solar panel to DC-002 or the power adapter, and then connect to the DC-002 through the power adapter. If the positive and negative connections are correct, the Charge indicator light is on, and simultaneously, the battery capacity indicator light flashes. When the battery is fully charged, the Solar Done light will be on, and the Solar Charge light will be off.
Self-adaptive voltage detection: detects each 500ms interval, and if there is no recharging current, automatic tracking to the maximum point for solar charging after detection is complete.
TYPE-C charging status indicator: connect the charger to the TYPE-C interface with the TYPE-C cable, if the charger supports fast charging mode, it enters this mode after a while. Otherwise, it recharges in slow mode. The battery capacity indicator flashes when recharging, and is always on when is fully charged.
Type-C discharging: Can use a TYPE-C data cable to convert power for electronic devices.
5V screw terminal: It can convert power for electronic devices through a USB cable.
If you have good hands-on skills, you can detach the screw terminal and directly solder it onto your board through the soldering holes.

If the battery is properly installed in the battery holder:
- Plug in the negative electrode first, and then push it in along the positive electrode

How to install a battery properly

If the battery is removed correctly from the battery holder:
- You need to use a non sharp tool, such as the tip of a tweezer, insert it into the positive electrode position, push it, and pull it up

How to remove a battery correctly

Note:

⚫When both Type-C charging and screw terminal discharging are operated simultaneously, fast charging and discharging are not supported.

⚫Fast charging is only supported when using a charger that supports fast charging. When connected to a charger that supports fast charging, it will enter fast charging mode approximately 30 seconds later. Charging with a regular 5V charger will not activate fast charging mode.
⚫Since the positive pole of the battery holder is connected together by a copper sheet, and the negative pole is also connected together by a copper sheet, the battery must not be reversed during installation. Reverse connection may cause fire and explosion.

Lithium Batteries Usage Notes

Li-ion and Li-po batteries are quite unstable. They may cause fire, personal injury, or property damage if they're not properly recharged or used.
Do not reversely connect the polarities when recharging or discharging the battery. Do not use an inferior charger/charging panel to recharge the battery.
Do not mix use old batteries with new ones, avoid using batteries of different brands.
When buying a Lithium battery, should always make sure the battery specification is compatible with the expansion board. Choose batteries from the formal manufacturer, and ensure the batteries will work stably and safely by aging test.
Lithium batteries have a limited cycle life, they will also deteriorate as time goes by. Should be replaced with new ones when the batteries reach their max cycle life or work over two years, whichever comes first.
Should be placed carefully and properly, keep it away from inflammable and explosive articles, away from children, and avoid any safety accident caused by careless storage.

Application Example

Solar-powered control system for Raspberry Pi / Jetson Nano / Arduino and other microcontrollers or development boards.

Dimensions

Resource

Schematic

Schematic

Datasheet

Support

Technical Support

If you need technical support or have any feedback/review, please click the Submit Now button to submit a ticket, Our support team will check and reply to you within 1 to 2 working days. Please be patient as we make every effort to help you to resolve the issue.
Working Time: 9 AM - 6 PM GMT+8 (Monday to Friday)

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Solar Power Manager (D)

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